Reversible automatic lock slider for separable fasteners



Aug. 29, 1950 L H MORI 2,520,326

K DER REVERSIBLE AUT OMATIC L FOR SEPARABLE FA ENE Filed Feb. 28, 47

ENTOR Lows .Mo/w/v A TTO R N Y form of slider which I Patented Aug. 29,1950 UNITED STATES PATENT OFFICE REVERSIBLE AUTOMATIC LOCK SLIDER l .FORSEPARABLE FASTENERS Louis Morin, Bronx, N; Y. Application February 28,1947, Serial No. 731,623

channel of the slider. .1 Still; more. particularly,

the invention deals with a double. acting lock slider having pairsofpulls and yokes on opposed Walls thereof, with means .WhGlGbYfllhB actuation of either pull will cause both yokes to lock in retracting orwithdrawing the pin or look elements from the channel of the sliderbody. The novel features of the invention will behest understood fromthe following description when taken together with theaccompanying-drawing, in which certain embodiments of the invention aredisclosed, andin which the separate parts are designated by suitablereference characters in each of the views; and in which: I

Fig. 1 is a side and sectional view of a, slider made according to myinvention, showing one use thereof. I

Fig. 2 is a section on theline 2- 2 of Fig. 1, omitting the pull. i

Fig. 3 is a longitudinal section through another employ, showing dualpulls and dual yokes.

Fig. l is a section on the line 4 -4 of Fig. 3,

omitting the pulls. H

Fig. 5 is a plan viewof the structure shown in Fig. 3; and

f Fig. 6 is a section on the line li -50f Fig.5.

In Figs. 1 and 2 of the drawing, I have shown one simple form of myinvention. In these figures, It represents aslider body having spacedtop and bottom walls I1 and i2 joined at one end in a connecting web.I3,the walls H and l2having inturned flanges l4 and I5 defining thechannel at one end of the slider. Extending upwardly from the wall Ii atthe front and rear thereof, are lugs l6 and I! having. inwardlyextending conical bearing portions i8 and I9. Between these bearingportions and lugs is disposed a- 1aterally rocking elongated yoke 20.The yoke has conical recesses .2! and 22 atthe ends thereof to receivethe conical bearings 18 and IS in providing the pivotal or laterallyrocking mounting of the yoke. The, forward end of the 9 ohms, (01.24-20514) yoke has a downwardly extending pin or look element 23, whichextends, into the channel of 2 the slider body through an opening 24formed in thewallll n The yoke 29 has a side wall 25 shaped to formtwocam surfacesitand 2! adapted to be en: gaged by the cross head 28 .ofa pull 29 to rock the yoke 29 on its pivots inswinging the finger 23 outof the channel of the slider against the action of a coil spring 30.This spring 30 is arranged in a socket ill at the side of, the yokeopposite to that which includes the downwardly extending finger 2 3. Itwillappear from a con.- sideration of Fig. 1, thatlthe ,wal1 25 or thecam extension 26 thereof has a further rib extension 32 onto the finger,23 which forms a stop engaging the wall of the slider I I, asseen. at 33in checking inward movement of the. pinu23... In other words, the spring33 serves tosupportgthe yoke in the position shown in Fig. l, and alsoindicated in Fig. 2, at all times, except when the pull is actuated tomove .the slider along the stringers. In this latter operation, thecross head .28 operates uponeither of .thesurfaces 26 and 21 to raisethe finger 23.

In Figs. 3 to 6 inclusive, I have shown a modification of the structure.shown in Figs. 1 and 2, wherein two simi1ar yokes-34--34 are pivotallymounted in lugs 35-36 and 35 -35, similar to the lugs ll. The yokes Bl-34" are substantially similar to the lug 2t, beingzmodified to theextent that the inner ends thereof are ,provided with laterallyextending bearing portions 31-38 on the yoke 34, and 3l'--38f..on;theyoke, 34, note Figs. 4 and 6. The bearing portions 313if differ from thebearing portions 38.38' in. that the first have flat lower. surfaces andthe latter, bevelled surfaces to providefree swinging or rocking of theyokes, as. will appear from a consid- 4i and. 42 at opposite sidesof theweb .40, are

what I term transfer motion pins .4 34;4. These pins normally engage thelower surfaces, of ,the yokes or the bearings 3J -3'|' and 38-38 whenthe yokes are in neutral position, as seen ,inFig. 4

of the drawing, andwith the pin .45 of the yoke 34, and the pin .4 5 ofthe yoke 34 extending into the channel of the slider,.springs Ali-46fsup .porting the yokes in this position, the same as in the structureshown in Figs. 1 and *2.

Now, then, after either onepf the yokes 34 34 "is rocked through themedium or its operating pull 41-41, the rocking movement contributed toone yoke will befcoritributed to the opposed sociated with these parts.

yoke through said transfer motion pins. In other words, considering Fig.6 of the drawing, it will appear that if the left side of the yoke 34were raised by operation of the pull 41, the right side would be moveddown, the pin 44 correspondingly moved down transmitting this motion tothe right side of the yoke 34, and then in turn, the transfer pin 43would be moved upwardly, consistent with the raising of the left side ofthe yoke 34. When the pull is released, the springs 4G46' willutomatically return the parts to their normal locked position, as seenin Figs. 3. and- 4 of the drawing.

In that the other structure of the yokes 3434' is the same as the yoke20, no further detailed description thereof will be given.

Sliders of the type and kind shown in Figs. 3 to 6 inclusive are adaptedfor use on installations where sliders can be practically operated fromboth sides of the fastener. This is particularly desirable, for example,upon a'tent flap, where the flap might be opened or closed from theinterior or exterior of the tent. At all times, the slider may beretained in locked position, or at any point along the stringer length.

It will be understood that with both forms of construction shown, theslider is in the form of a die cast body and the lugs as at l6, I1, 35and 36 will be normally cast in a spread or extended position, and willbe moved into closed operative position after placement of the die castyokes in position therebetween and with the pull or cross head thereofarranged in assembled relationship with respect to the yoke, the springalso being in position.

Considering Figs. 3 to 6 inclusive,it will be apparent that the completeassemblage is formed from three primary parts, namely the slider body, ayoke and a pull with a spring being asstructure, the automatic lockingprinciple be comes substantially foolproof in operation. Fromastandpoint of appearance and practicability of the fastener, thearrangement of the lock finger or pin within the side edge boundaries ofthe yokes, in addition to streamlining the slider structure, alsoenables the pull to drop .flatly upon the slider wall when at said endof the slider. Furthermore, the use of the coil spring at the other sideof the yokes and other end thereof in conjunction with the integralpivot portions on the posts of the slider wall materially simplifies theassemblage of the slider parts.

Having fully described my invention, what I claim as new and desire tosecure'by Letters .Patent is:

. 1. A look slider for separable fastener stringers comprising achannelled slider body defined by spaced walls, one wall of the sliderbodyv having upwardly projecting posts at end portions of said wall andcentrally thereof, said posts having inwardly extending integral pivotportions, an elongated yoke member arranged between said posts andhaving sockets for receiving the pivot portions thereof to providelateral swinging Although two yokes (ill a movement of the yoke on saidslider wall, one end of the yoke having at one side of the pivot thereofand within side boundaries of said yoke an inwardly extending lockfinger passing through an aperture in said wall of the slider to extendinto the channel of said slider body, the other end of the yoke at theopposite side thereof having a spring engaging the yoke to normallysupport the lock finger in position extended into said channel, thefirst named'side of the yoke having longitudinally spaced cam surfaces,a pull having a cross head arranged between the yoke and said sliderwall and adapted to engage said cam surfaces in swinging the yoke on itspivots against the action of said spring to withdraw the ,lockfingerfrom the channel in operating the slider along stringers in bothdirectons, said yoke and pull constituting a lock unit on one wall ofthe slider body, a similar unit on the other wall of said slider body,and means comprising a pair of motion transfer pins arranged verticallyin the slider body and operatively engaging both side portions of theyoke of both units at-the second named end of said yokes wherebyoperation of one unit will automatically actuate the companion unitthrough said pins.

2. A look slider for separable fastener stringers comprising achannelled slider body defined by spaced walls, one wall of the sliderbody having upwardly projecting posts at end portions of said wall andcentrally thereof, said posts having inwardly extending integral pivotportions, an

elongated yoke member arranged between said' posts and having socketsfor receiving thepivot portions thereof to provide lateral swingingmovement of the yoke on said slider wall, one end of the yoke having atone side of the pivot thereof and within side boundaries of said yoke aninwardly extending lock finger passing through an aperture in said wallof the slider to extend into the channel of said slider body, the otherend of the yoke at theopposite side thereof having a spring engaging theyoke to normally support the lock finger in position extended into saidchannel, the first named side of the yoke having longitudinally spacedcam surfaces, a pull having a cross head arranged between the yoke andsaid slider wall and adapted to engage said cam surfaces in swinging theyoke on its pivots against the action of said spring to withdraw thelock finger from the channel in operating the slider along stringers inboth directions, said yoke and pull constituting a lock .unit on onewall of the slider body, a similar unit on the other wall of said sliderbody, means comprising a pair of motion transfer pins arrangedvertically in the slider body and operatively engaging both sideportions of the yoke of both units at the secondnamed end of said yokeswhereby operation of one unit will automatically actuate the companionunit through said pins, and means at the second named end portion ofsaid yokes checking movement of the yokes into inoperative' positions.

3. A look slider for separable fastener stringers comprising achannelled slider body defined by spaced walls, one wall of the sliderbody having upwardly projecting posts at end portions of said wall andcentrally thereof, said posts having inwardly extending integral pivotportions, an elongated yoke member arranged between. said posts andhaving sockets for receiving the pivotpor- .tions thereof to providelateral swinging movement of the yoke on said slider wall, one end ,of

the yoke having at one side of the pivot thereof and within sideboundaries of said yoke an inwardly extending lock finger passingthrough an aperture in said wall of the slider to extend into thechannel of said slider body, the other end of the yoke at the oppositeside thereof having a spring engaging the yoke to normally support thelock finger in position extended into said channel, the first named sideof the yoke having longitudinally spaced cam surfaces, a pull having across head arranged between the yoke and said slider wall and adapted toengage said cam surfaces in swinging the yoke on its pivots against theaction of said spring to withdraw the look finger from the channel inoperating the slider along stringers in both directions, said yoke andpull constituting a lock unit on one wall of the slider body, a similarunit on the other wall of said slider body, means comprising a pair ofmotion transfer pins arranged vertically in the slider body andoperatively engaging both side portions of the yoke of both units at thesecond named end of said yokes whereby operation of one unit willautomatically actuate the companion unit through said pins, means at thesecond named end portion of said yokes checking movement of the yokesinto inoperative posi tions, and means at the first named end portionsof said yokes checking movement of the lock fingers into the channel ofthe slider body.

4. In a dual lock slider for separable fastener stringers, a pair oflock units, one arranged upon each surface of the slider body, each unitincluding a pull for operating the same, means pivotally supporting eachunit to swing laterally on the slider body, and pair of motion transferpins extending through the slider body and engaging each of said unitswhereby the operation of either unit by its pull will have the effect ofoperating the other unit.

5. A dual lock slider comprising a channelled slider body defined byspaced walls, said walls having apertures opening into the channel ofsaid body, a pair of similar lock elements, means movably supportingsaid elements on said walls of the slider body, each element having alock finger extending through said aperture into the channel of theslider body, each element having a pull for independent actuationthereof at each side of the slider body, and means mounted in the sliderbody operatively engaging said elements whereby operation of one elementby its pull will correspondingly operate the other element inwithdrawing the lock fingers of said elements from the channel of theslider body.

6. A dual lock slider comprising a channelled slider body defined byspaced walls, said walls having apertures opening into the channel ofsaid body, a, pair of identical lock elements, means movably supportingsaid elements on said walls of the slider body, each element having alock finger extending through said aperture into the channel of theslider body, each element having a pull for independent actuationthereof at each side of the slider body, means mounted in the sliderbody operatively engaging said elements whereby actuation of one elementby its pull will correspondingly actuate the other element to withdrawthe lock fingers of said elements from the channel of the slider body,and each element having a spring normally supporting the element withthe lock finger thereof extending into the channel of the slider body.

7. In a dual-locking, double-walled, channelled slider for separablefastener stringers having a yoke mounted on each Wall and a pullengaging each yoke, and wherein the walls are web-connected and each hasa recess opening into the channel of said slider, the combination of apair of transfer motion pins extending depthwise through the slider andthrough each wall thereof adjacent the web end, said pins being capableof up and down movement; each yoke being mounted for lateral movement oneach said wall of the slider in response to operation of the pull andhaving a pair of bearing portions at its webadiacent end, said bearingportions being engageable by said pins, 2. locking finger on thewebremote end of each yoke for movement through each said recess intoand out of the slider channel as each yoke is moved, each yoke beingspring actuated to normally force the locking finger into the sliderchannel, said slider being characterized by the fact that operation ofeither pull results in moving both yokes, the locking fingers of theyokes being consequently moved out of the slider channel.

8. In a dual-locking, double-walled, channelled slider for separablefastener stringers having a yoke mounted on each wall and a pullengaging each yoke, and wherein the walls are web-connected and each hasa recess opening into the channel of said slider, the combination of apair of transfer motion pins extending depthwise through the slideradjacent the web end, said pins being capable of up and down movement;each yoke being mounted for lateral movement on each said wall of theslider in response to operation of the pull and each said yoke beingengageable by said pins, a locking finger on the webremote end of eachyoke for movement through each said recess into and out of the sliderchannel as each yoke is moved, each yoke being spring actuated tonormally force the locking finger into the slider channel, said sliderbeing characterized by the fact that operation of either pull results inmoving both yokes, the locking fingers of the yokes being consequentlymoved out of the slider channel.

9. In a dual-locking, double-walled, channelled slider for separablefastener stringers having a locking element mounted on each wall and apull engaging each said element, and wherein the walls areweb-connected, the combination of a pair of transfer motion pinsextending depthwise through the slider adjacent the web end, said pinsbeing capable of up and down movement; each locking element beingmounted for lateral movement on each said Wall of the slider in responseto operation of the pull and each said element being engageable by saidpins, each element being spring actuated to normally look the fastenerstringers in the slider channel, said slider being characterized by thefact that operation of either pull results in moving both lookingelements out of locking engagement with the fastener stringers.

LOUIS H. MORIN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,172,214 Marinsky Sept. 5, 19392,172,217 Morin Sept. 5, 1939 2,178,948 Brozek Nov. 7, 1939 2,185,658Carlile Jan. 2, 1940 2,303,750 Marinsky Dec. 1, 1942 2,405,883 GouldAug. 13, 1946

